Which Motherboard to Choose

Okay, currently I have Win Server 2003 on my old "experimental" PC that will soon have a new Motherboard, fast CPU, more RAM, 2 Maxtor 200GB hard drives, ATI video card (not sure which but probably the best one out), and a nice 7.1 sound card...

So, I need some ideas on what type of motherboard to get. I am going to use my OEM full tower that came with my Dell desktop PC. So, the form factor really isn't a problem.

I am probably going to use WinXP Pro or WinXP 64-bit (yes, I have it ).

So, which motherboard should I go with that would accept at least a Pentium IV 3.0-GHZ CPU? I will probably use 512MB RAM but I would like to have a motherboard that would allow over 1GB of RAM.